this weekend, sarah palin slammed karl rove. >> if they feel that strongly about who gets to run in this party, then they should buck up or stay in the truck. buck up and run. >> reporter: rove hit back on fox news sunday. >> i say if i did run for office and win, i'd serve out my term. i wouldn't -- i wouldn't leave office midterm. >> reporter: and john mccain recently called rising republican star rand paul a wacko-bird. paul responded at the cpac conference. >> the gop of old has grown stale and moss-covered. [ cheers ] i don't think we need to name any names, do we? >> reporter: now, these divisions have become personal lately in the gop, and i think a way, wolf, we don't normally see. but they're substantive divisions as well. how to tackle the issues like immigration reform, things like same-sex marriage. something that's becoming increasingly popular. and, also, how to tackle women's issues in a way that doesn't repel women, as mitt romney did in november. >> lots of work ahead. thanks very much, brianna for that report. the report, by the way, repaired by the republican national